Just like going to Vegas and playin the slots..
Pull the handle and hope for the best..
Buying refurbs (B-stock) one can save $ but has its risks..
If there is a technical issue, who pays the freight?
Make double sure all of the accessories are included such as AC cord, primary remote control, EQ microphone.
Also verify its warranty (parts, labor, shipping costs), noting that most issues show up in the 1st 2 months.
Just my $0.02... 😉👍